arch/arm/lib/io-shark.c

   1 /*
   2  * linux/arch/arm/lib/io-shark.c
   3  *
   4  * by Alexander.Schulz@stud.uni-karlsruhe.de
   5  *
   6  * derived from:
   7  * linux/arch/arm/lib/io-ebsa.S
   8  * Copyright (C) 1995, 1996 Russell King
   9  */
  10 #include <linux/kernel.h>
  11
  12 #include <asm/io.h>
  13
  14 void print_warning(void)
  15 {
  16         printk(KERN_WARNING "ins?/outs? not implemented on this architecture\n");
  17 }
  18
  19 void insl(unsigned int port, void *to, int len)
  20 {
  21         print_warning();
  22 }
  23
  24 void insb(unsigned int port, void *to, int len)
  25 {
  26         print_warning();
  27 }
  28
  29 void outsl(unsigned int port, const void *from, int len)
  30 {
  31         print_warning();
  32 }
  33
  34 void outsb(unsigned int port, const void *from, int len)
  35 {
  36         print_warning();
  37 }
  38
  39 /* these should be in assembler again */
  40
  41 /*
  42  * Purpose: read a block of data from a hardware register to memory.
  43  * Proto  : insw(int from_port, void *to, int len_in_words);
  44  * Proto  : inswb(int from_port, void *to, int len_in_bytes);
  45  * Notes  : increment to
  46  */
  47
  48 void insw(unsigned int port, void *to, int len)
  49 {
  50         int i;
  51
  52         for (i = 0; i < len; i++)
  53                 ((unsigned short *) to)[i] = inw(port);
  54 }
  55
  56 void inswb(unsigned int port, void *to, int len)
  57 {
  58         insw(port, to, len >> 2);
  59 }
  60
  61 /*
  62  * Purpose: write a block of data from memory to a hardware register.
  63  * Proto  : outsw(int to_reg, void *from, int len_in_words);
  64  * Proto  : outswb(int to_reg, void *from, int len_in_bytes);
  65  * Notes  : increments from
  66  */
  67
  68 void outsw(unsigned int port, const void *from, int len)
  69 {
  70         int i;
  71
  72         for (i = 0; i < len; i++)
  73                 outw(((unsigned short *) from)[i], port);
  74 }
  75
  76 void outswb(unsigned int port, const void *from, int len)
  77 {
  78         outsw(port, from, len >> 2);
  79 }